today,Apple has stopped signature verification for iOS 18.6.2, which means iPhone users who have upgraded to iOS 26 can no longer downgrade to iOS 18.6.2.Apple is not forcing users to install iOS 26 and can choose to continue using iOS 18, but once a device is upgraded to iOS 26, there is no turning back.
It is understood that Apple uses the verification server to ensure that the software version of the iOS device does not match the turned off verification version. This is one of its methods to prohibit downgrading and flashing.
Apple pushed the official version of iOS 26 update on September 16 this year.Bringing a new interface design of "Liquid Glass".
Liquid Glass is also Apple’s biggest design change in iOS since the introduction of flat design in iOS 7.
However, the new design of Liquid Glass has received mixed reviews from users.
Some users said: "Animations are slow and the interface feels sluggish on older iPhones." "Animations make no sense." "Contrast is terrible." "The design is inconsistent, some are flat, some are glass."
Of course, there are also users who upgraded to iOS 26 and praised it: "It gives people a modern and clean feeling, making the smartphone more interesting." "The icons are very beautiful, reminiscent of the original Apple UI design."
